RichWindowFunction (Flink : Streaming Java 2.0.0 API)

java.lang.Object
- org.apache.flink.api.common.functions.AbstractRichFunction
- - org.apache.flink.streaming.api.functions.windowing.RichWindowFunction<IN,OUT,KEY,W>

Type Parameters:

IN - The type of the input value.

OUT - The type of the output value.

KEY - The type of the key.

W - The type of Window that this window function can be applied on.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, org.apache.flink.streaming.api.functions.windowing.WindowFunction<IN,OUT,KEY,W>
```
@Public
public abstract class RichWindowFunction<IN,OUT,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window>
extends org.apache.flink.api.common.functions.AbstractRichFunction
implements org.apache.flink.streaming.api.functions.windowing.WindowFunction<IN,OUT,KEY,W>
```
Rich variant of the WindowFunction. As a RichFunction, it gives access to the RuntimeContext and provides setup and tear-down methods: RichFunction.open(OpenContext) and RichFunction.close().

See Also:

Serialized Form

- Constructor Summary
  
  Constructors
  Constructor Description
  
  RichWindowFunction()
- Method Summary
  - Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction
    close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface org.apache.flink.streaming.api.functions.windowing.WindowFunction
    apply

- Constructor Detail
  - RichWindowFunction
```
public RichWindowFunction()
```